Cartridge and atomizer having same

ABSTRACT

A cartridge and an atomizer having the cartridge are provided. The cartridge includes a micro-porous body with an absorption surface and an atomization surface; a heating element is embedded in the micro-porous body; the heating element is disposed between the absorption surface and the atomization surface; the heating element includes a first surface and a second surface; the heating element is bored with multiple spaced through holes, the through holes are extending from the first surface to the second surface. The heating element includes a tube-shaped or a flake-shaped structure with an even thickness. An axial direction of the through holes is parallel with a direction of liquid conduction between the absorption surface and the atomization surface.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a continuation application of U.S. patentapplication Ser. No. 16/664,623, which claims priority to Chinese PatentApplication CN 201821763876.1 filed on Oct. 26, 2018. The content ofU.S. Ser. No. 16/664,623 and CN 201821763876.1 is hereby incorporated byreference herein as if set forth in its entirety.

TECHNICAL FIELD

The present disclosure relates to the field of atomizers, and inparticular to a cartridge and an atomizer having same.

BACKGROUND ART

The electronic cigarette products are realized to rapidly atomizingliquid by a cartridge allocated therein, so performances andcharacteristics of the cartridge are directly influences the atomizingeffect on the liquid. The prior art cartridge is typically composed of aliquid conductive element and a heating wire carried on the liquidconductive element. As used herein, the liquid conductive elementabsorbs liquid by a surface of the liquid conductive element contactinga reservoir formed in the atomizer to absorb the liquid then conductedto the heating wire via micro-pores therein and then heated by theheating wire to form an aerosol inhaled by the smokers.

The previous heating wire in the atomizer directly contacts the cottonor the heating wire is half exposed to outside of the liquid conductiveelement. However, in one aspect, when a power of the heating wire isincreased or the heating wire doesn't contact the liquid completely, itis easy to generate burnt flavor. In another aspect, in the aerosol thatcontain some shredded pieces of cotton fibers, carbide fibers or metalparticles in the heating wire itself, which is adverse to the human'shealth.

To eliminate the above shortages, multiple improved atomizers areproposed and adopted, such as Chinese patent CN201711069939.3 filed bySHENZHEN INNOKIN ELECTRONIC TECH CO LTD relates to a structure of anatomizer including a main body of power metallurgy and a heating wireafter insulation treatment, and the heating wire is embedded into themain body of power metallurgy. As used herein, the main body of powermetallurgy includes a micro-porous liquid conductive element formed bysintering metal powers. In addition, Chinese patent CN201810150677.1filed by SHENZHEN SMOORE TECHNOLOGY LTD relates to an electroniccigarette and a heating element thereof, the heating element includes aporous body for absorbing liquid and at least one heating element foraerosolizing the liquid carried on the porous body; the at least oneheating element includes an elongate strip-shaped heating part, part ofthe heating part is embedded in the micro-porous body. By replying onembedment and segments, the micro-porous body is prevented from dry burnto realize absorption and atomization of the liquid, leading to morepure taste of the aerosol.

However, when using the above structure, after the heating wire isembedded, the heat generated by the heating wire will be absorbed andconducted more rapidly, and the amount of liquid contacting the heatingwire gets decreased to cause the atomizing efficiency and the atomizingamount to be reduced, particles of the aerosol are smaller therebyweakening the throat hit.

SUMMARY

To overcome the above drawbacks to the cartridge, the present disclosuregenerally relates to a cartridge without dry burn and metal pollution,having a stable amount of aerosol.

In a first aspect, the present disclosure provides a cartridge includinga micro-porous body with an absorption surface and an atomizationsurface, and a heating element embedded in the micro-porous body; theheating element disposed between the absorption surface and theatomization surface; the heating element having a first surface and asecond surface opposite with each other; the heating element bored withmultiple spaced through holes extending from the first surface to thesecond surface. Preferably, the heating element includes a tube-shapedor a flake-shaped structure with an even thickness. Preferably, theaxial direction of the through holes is parallel with the direction ofliquid conduction between the absorption surface and the atomizationsurface. The axial direction of the through hole may also beperpendicular to the direction of the liquid conducting from theabsorption surface to the atomization surface.

Preferably, sizes of the through holes are in a range of 0.1˜0.5 mm.That is, diameters of the through holes are in a range of 0.1˜0.5 mm.

Preferably, a distance from the heating element to the atomizationsurface is in a range of 0.2˜2 mm along a direction of the absorptionsurface towards the atomization surface.

Preferably, the heating element includes a strip-shaped structure to bewound as a spiral.

Preferably, the micro-porous body comprises a first micro-porous bodyand a second micro-porous body.

Preferably, the heating element is disposed between the firstmicro-porous body and the second micro-porous body.

Preferably, the absorption surface is formed on the first micro-porousbody, the atomization surface is formed on the second micro-porous body.

Preferably, a heat conductive rate of the first micro-porous body ishigher than that of the second micro-porous body;

Preferably, the first micro-porous body includes a first micro-porousmaterial, the second micro-porous body includes a second micro-porousmaterial; a heat conductive rate of the first micro-porous material ishigher than that of the second micro-porous material.

Preferably, the first micro-porous body has a first porosity, the secondmicro-porous body has a second porosity; the first porosity is less thanthe second porosity;

Preferably, a thickness of the heating element is in a range of 0.1mm˜0.15 mm.

The present disclosure further relates to an atomizer including anatomizing sleeve, the atomizing sleeve has a reservoir formed therein;the atomizing sleeve has a cartridge therein configured for atomizingliquid, such as (but not limited to) tobacco liquid; as used herein, thecartridge is according to the above cartridges.

In embodiments in the present disclosure, by replying on the heatingelement embedded in the micro-porous body and further through holesprovided thereon, they guides the aerosol to be converged along thetransversal and longitudinal directions and the aerosol bubble to growbigger since oscillation and fusion in an aerosolizing process, thusimproving particle sizes of the aerosol and changing the power of theheating element, thereby improving the heating efficiency and improvingthe aerosol amount.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the present disclosure can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure. Moreover,in the drawings, like reference numerals designate corresponding partsthroughout the several views.

FIG. 1 is an isometric view of the cartridge after assembled accordingto an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of the cartridge in FIG. 1 ;

FIG. 3 is an exploded view of the cartridge before assembled in FIG. 2 ;

FIG. 4 illustrates part of the heating element unfolded in FIG. 3 ;

FIG. 5 is a cross-sectional view of the cartridge incorporating themicro-porous body and the heating element assembled according to anotherembodiment of the present disclosure;

FIG. 6 is an isometric view of the heating element in FIG. 3 ;

FIG. 7 is an isometric view of the heating element according to anotherembodiment of the present disclosure;

FIG. 8 is an isometric view of the heating element according to theother embodiment of the present disclosure;

FIG. 9 is an isometric view of the cartridge incorporating themicro-porous body and the heating element assembled according to anotherembodiment of the present disclosure;

FIG. 10 is an isometric view of the atomizer incorporating the cartridgeaccording to one embodiment of the present disclosure;

DETAILED DESCRIPTION

Provided herein are a cartridge mainly applied to anelectronically-operated aerosol-generating article (alternativelyreferred to as vaporization devices or electronic vaping devices etc.)that generally heats a liquid aerosolizable material (such as (but notlimited to) tobacco liquid) containing nicotine to generate an aerosol,eventually drawn by the users. Taking the electronic cigarette as anexample in the present disclosure hereinafter, the cartridge typicallyincludes a micro-porous body and a heating element, of course includingother functional components, as well as overall design and assembly wayto be concerned.

Referring to FIG. 1 to FIG. 3 , FIG. 1 is an isometric view of thecartridge after assembled according to an embodiment of the presentdisclosure; FIG. 2 is a cross-sectional view of the cartridge in FIG. 1; FIG. 3 is an exploded view of the cartridge before assembled in FIG. 1. In this embodiment, the structure of the atomizer includes aconductive lid 10 and a conductive sleeve 20. According to FIG. 1 andFIG. 3 , the conductive lid 10 is shaped as a lid at a proximal end ofthe atomizer, the conductive sleeve 20 is roughly a hollow cylinder at adistal end of the atomizer. The conductive lid 10 covers an openingformed on a proximal surface of the conductive sleeve 20. Ultimatelywhen assembling other modules of the electronic cigarette, theconductive lid 10 and the conductive sleeve 20 are respectively coupledwith the anode and cathode electrodes of the power supply to form a loopalong with the heating element in the cartridge. Therefore, ifapplicable, the conductive lid 10 and the conductive sleeve 20 are bothmade by electrically conductive materials, generally metal conductivematerials adopted.

To avoid the conductive lid 10 and the conductive sleeve 20 to bedirectly conducted, between the conductive lid 10 and the conductivesleeve 20 defines a circular insulator 30 bored with a mounting hole 31.In accordance with characteristics of the conductive lid 10 covering theconductive sleeve 20, the insulator 30 is designed as a circular shapeand mounted over the opening of the conductive sleeve 20, next theconductive lid 10 is mounted to cover the insulator 30.

To further prompt the atomization of liquid, an atomization component 40is disposed inside a chamber of the conductive sleeve 20. Theatomization component 40 includes a hollow micro-porous body 41 and aheating element 42 embedded in the micro-porous body 41.

As used herein, a contour of the micro-porous body 41 is matched withthe chamber of the conductive sleeve 20, which is cylindrical. Inside ofthe micro-porous body 41 has an air flow path 43 configured foroutputting the aerosol generated by the heating element 42.

In the embodiments of the present disclosure, FIGS. 2 to 5 are relativewith the aerosol flowing and the atomization. FIG. 5 is across-sectional view of the cartridge incorporating the micro-porousbody and the heating element assembled according to another embodimentof the present disclosure. Along a radial direction, an outer surface ofthe micro-porous body 41 works as an absorption surface 411 configuredfor absorbing liquid stored in the reservoir, an inner surface of themicro-porous body 41 works as an atomization surface 412, the aerosolafter atomization of the liquid is expelled from the atomization surface412 to the air flow path 43 at the center. The micro-porous body 41itself has the micro-porous structure for conveying the liquid that isabsorbed by the absorption surface 411 to the heating element 42 viacapillary impregnation. Meanwhile, to satisfy that the absorptionsurface 411 is capable of absorbing liquid, a periphery of theconductive sleeve 20 is bored with liquid conductive holes 21 forallowing the liquid to flow into the conductive sleeve 20, the liquidfurther is absorbed by the absorption surface 411 of the micro-porousbody 41.

The heating element 42 is embedded in the micro-porous body 41, byrelying on the heating element 42 entirely embedded in the micro-porousbody 41, the liquid doesn't need to be conducted to the surface of theheating element 42, only flowing near to the heating element 42 whilestarting to be heated and atomized. In one aspect, the heating element42 and the micro-porous body 41 has thermal contact for preventing dryburn, in another aspect, a majority of the liquid fail to directlycontact the heating element 42, which may prevent the heating element 42from generating metal pollution. Since the heating element 42 is made ofstainless steel, Ni—Cr alloy, Fe—Cr—Al alloy, metallic titanium etc.,and the material also includes slight metal impurities to release metalparticles when heating and contacting the liquid, thereby preventingmetal pollution due to too much liquid contact does during atomization.

Furthermore, in the above embodiment, to facilitate the aerosol rapidlyflowing into the air flow path 43, the position of the heating element42 embedded in the micro-porous body 41 may be allocated near the airflow path 43, the embedding depths are in a range of 0.2˜2 mm, that isdistances between the heating element 42 and the atomization surface(that is the inner surface of the micro-porous body 41) are in a rangeof 0.2˜2 mm.

A shape of the heating element 42 is defined with numerous convenientshapes, such as a spiral flake shape or other shapes in FIG. 6 to FIG. 8. In order to improve the particle sizes of the aerosol, the heatingelement 42 is bored with through holes 421 extending from the first sidesurface to the second side surface. The through holes 421 provided aredifferent from an intention of improving a resistance to bore holes onthe heating wire, adopting small-sized holes for changing a liquidcontacting way when liquid particles contacts the heating element 42,that is three-dimensional contact, not surface to surface contact. Thus,the oscillation and fusion of the liquid within the through holes makethe aerosol particles bigger, leading to strong throat hit. Ifapplicable, the diameters of the through holes 421 are in a range of0.1˜0.5 mm, which prevents too big sized through holes 421 therebylacking oscillation of the liquid.

Furthermore, the oscillation of the liquid in the through holes 421 mayrefer to FIG. 4 , FIG. 4 illustrates part of the heating elementunfolded in FIG. 3 . By replying on appropriate sized through holes 421,the heating element 42 is changed such that current paths diverge orconverge on sites near to through holes 421, since different sites havedifferent temperatures based on different currents. More specifically,in FIG. 4 , since the heating element 42 is bored with numerous throughholes 421, after two ends of the heating element 42 is electricallycoupled with the power supply, in one aspect, the cross-sectional areaof the heating element where includes through holes 421 is decreasing,the resistance thereof is getting larger; in another aspect, thedivergence and convergence of current around the through holes 421 makesthe current distribution uneven around the through hole. Ultimately theheating temperature of different sites around the through holes 421 ischanging. As used herein the flavored liquid containing propylene glycol(PG), vegetable glycerin (VG) or other organic based solvent would beatomized at different sites, such as A site in FIG. 4 has a highertemperature; C site has a lower temperature; B site has a mediatetemperature. When the liquid contacts the heating element foratomization in the through holes 421, the flavored solvent is atomizedto generate a big amount of aerosol particles at C site; vegetableglycerin (VG) is atomized to generate a big amount of aerosol particlesat B site; propylene glycol (PG) is atomized to generate a big amount ofaerosol particles at A site. Furthermore, since the through holes 421provide appropriate particle contacting space thereby in the spaceliquid containing above ingredients will be gradually blended to be bigmixing particles. Along with the aerosol is blended with other particlesto grow bigger, until inhaled into the mouth, it generates a good throathit. When there are no through holes 421, the different temperaturesites in FIG. 4 are not existed, various ingredients will be atomizedtowards different widths, until being inhaled into the mouth, withinsufficient fusion; and when the through holes 421 are too big, theparticles among through holes 421 have larger distances which isdifficult for fusion, and eventually the amount of the big-sized aerosolparticles are decreased.

Meanwhile, to improve the atomization efficiency and aerosol amount,preferably, an axial direction of the through holes 421 is perpendicularor parallel with a direction of liquid conducting in the micro-porousbody 41, as shown in FIG. 6 .

Furthermore, since the embedding method of the heating element 42 has adecreasing amount of aerosol compared to an exposure method, to overcomethe disadvantage, the micro-porous body 41 is designed as segmentationfor an intention to improve the atomization efficiency. Morespecifically, the heating element 42 embedded in the micro-porous body41 has different embedding depth, the micro-porous body 41 is separatedinto a first micro-porous body 410 disposed between the absorptionsurface 411 and the heating element 42, and a second micro-porous body420 between the heating element 42 and the atomization surface 412.Meanwhile, the second micro-porous body 420 has a lower heat conductiverate compared to the first micro-porous body 410.

Based on the heat efficiency gradient designs to the micro-porous body41, and the second micro-porous body 420 itself has low heat conductiverate thereby it is slow to convey heat outside with consequently acertain thermal insulation effect, thus the temperature of the secondmicro-porous body 420 can be maintained at the atomizing temperature toretain the atomization efficiency. However, the first micro-porous body410 has a high heat conductive rate thereby it is fast to convey heatoutside with consequently less atomization effect and less amount ofaerosol, as used herein, the first micro-porous body 410 mainly works asa function of liquid conduction and the atomization process mainlyfocuses on the second micro-porous body 420 disposed between the heatingelement 42 and the air flow path 43. In another aspect, since the secondmicro-porous body 420 directly contacts the air flow path 43, theaerosol would rapidly flow into the air flow path 43 so as to improvethe flow efficiency. Additionally, since the second micro-porous body420 has high atomization efficiency and the liquid is consumed fast,which is in favor of capillary impregnation between the firstmicro-porous body 410 and the second micro-porous body 420, andaccelerating atomization efficiency.

The above micro-porous body 41 having two different heat conductiverates may be realized by multiple methods hereinafter.

In one embodiment, the micro-porous body 41 is made of compositematerials, including at least one or more selected form a group ofmicro-porous ceramic, micro-porous glass ceramic, micro-porous glass,foamed metals, aluminum oxide, silicon carbide, diatomaceous earth andso on in a form of honeycomb rigid ceramic type. Two kinds of heatconductive materials with different heat conductive rates are combined,such as the first micro-porous body 410 includes highheat-conductive-rate materials like foamed metals and micro-porousceramic etc.; the second micro-porous body 420 includes lowheat-conductive-rate materials like micro-porous glass ceramic,micro-porous glass and silicon carbide ceramic etc. With different heatconductive rates, different heat conductive materials form the firstmicro-porous body 410 and the second micro-porous body 420 to improveatomization.

In another embodiment, an identical material with different porositiesis adopted, particularly, the porosity of the second micro-porous body420 is greater than that of the first micro-porous body 410. For themicro-porous body, the porosity is greater, a relative density thereofis lower thus the heat conductive medium is less thereby the heatconductive efficiency is lower. Obviously, the same material withdifferent porosities defined to form the first micro-porous body 410 andthe second micro-porous body 420 may improve atomization efficiency.

Of course, the aforementioned material and porosity may be usedtogether, that is, the first micro-porous body 410 has a higher heatconductive rate than the second micro-porous body 420 while the firstmicro-porous body 410 has a less porosity than the second micro-porousbody 420.

Furthermore, between the micro-porous body 41 and the conductive sleeve20 has a fibrous element 50 for absorbing and retaining the liquid. Whenthe cartridge doesn't work, if the micro-porous body 41 contains twomuch liquid, partial liquid leak out along a contact surface of themicro-porous body 41 and the conductive sleeve 20 under the gravity, butafter the fibrous element 50 is provided, the leakage of liquid ismitigated. If applicable, the shape of the fibrous element 50 may bedesigned as a cylindrical sleeve that can entirely covers the peripheryof the micro-porous body 41 (i.e. the absorption surface 411); thematerial of the fibrous element 50 includes cotton fiber, resin fiberand carbon fiber, some flexible fibers.

Meanwhile, in favor of the electrical coupling of the heating element42, two electrode connecters 44 are carried on the heating element 42.In a process of assembling, after allocating the heating element 42,welding two electrode connecters 44 of the heating element 42 then oneis coupled with the conductive lid 10, the other one is coupled with theconductive sleeve 20, thus the whole loop is finished. If applicable,the two electrode connecters 44 include pins that are capable ofdirectly abutting against the conductive lid 10/conductive sleeve 20 torealize coupling. In this way, it is convenient to remove componentsaway for replacement. Of course, in some embodiments, the two electrodeconnecters 44 are coupled with the conductive lid 10/conductive sleeve20 via welding.

Furthermore, referring to FIG. 6 and FIG. 8 , the heating element 42includes spiral or tubular shape, which can be changed/modified for anintention to increase atomization efficiency after embedding. Comparedto common heating wire with a thickness of 0.03˜0.1 mm and a resistanceof a few ohms, the thickness of the heating element 42 is increased to0.1 mm˜0.15 mm while the resistance is decreased to 0.4˜2.0 ohms. Whencoupled with the power supply that outputs constant outputted power, thecurrent is increased because of decreased resistance of the heatingelement 42, eventually the power P=I2*R is increased accordingly leadingto improve atomization efficiency.

In use, to tighten the connection of the cartridge and the reservoir andavoid leakage of liquid, the conductive sleeve 20 is provided with athreaded connector 22 for connecting with an inner wall of the atomizingsleeve, further a silicon ring 23 is provided at an end of the threadedconnector 22 to improve sealing.

The heating element 42 designed in spiral/tubular shape for matching theshape of hollow micro-porous body 41 after embedded. When the shape ofthe micro-porous body 41 adopts other rectangular or irregular shapes,the shape of the heating element 42 may be changed accordingly. Forinstance, in FIG. 8 , the micro-porous body 41 is a block, the uppersurface is the absorption surface 411, the lower surface is theatomization surface 412, the liquid absorbed by the absorption surface411 is conveyed towards the atomization surface 411 via micro-porousstructure, and the heating element 42 is embedded into the heatingelement 42 along a mounting seam 413. After embedding, the micro-porousbody 41 is divided into two parts, a first micro-porous body is disposedover the heating element 42 (i.e. between the heating element 42 and theabsorption surface 411), a second micro-porous body is disposedunderneath the heating element 42 (i.e. between the heating element 42and the atomization surface 411). Or along a direction of the liquidconveyed from the absorption surface to the atomization surface, themicro-porous body 41 includes the first micro-porous body 410 and thesecond micro-porous body 420, the heating element 42 is disposed betweenthe first micro-porous body 410 and the second micro-porous body 420,the liquid close to the heating element 42 is atomized to form anaerosol expelled from the atomization surface 420. Based on the abovedescription, in FIG. 9 , a heat conductive rate of the secondmicro-porous body 420 is less than that of the first micro-porous body410, in this way, the atomization efficiency is roughly equal to thatwhen the heating element 42 is exposed of the micro-porous body 41.Additionally, as shown in FIG. 9 , the heating element 42 is bored withthrough holes 421 for oscillation and fusion of liquid particles; andthe embedding depth of the heating element 42 underneath the atomizationsurface 412 is in a range of 0.2˜2 mm.

Further, when the micro-porous body 41 in FIG. 9 is adopted, theconductive lid 10 and the conductive sleeve 20 are modified in shapesand structures. More specifically, the conductive sleeve 20 is designedas a hollow block, and a side surface of the conductive sleeve 20opposite with the absorption surface 411 is bored with liquid conductiveholes 21; and the conductive lid 10 is designed to match with theconductive sleeve 20. Of course, to prevent the conductive lid 10 andthe conductive sleeve 20 from being directly conducted, an insulationelement 30 is provided therebetween, the insulation element 30 couldhave specialized shapes and mounting methods which should belong to thescope of the protection, without further description herein.

In the embodiments, the heating element is embedded into themicro-porous body, with through holes bored thereon, which promptsmutual gathering of the aerosol from transversal and perpendiculardirections. During atomization, the aerosol bubbles are growing biggerto improve the aerosol particles, with improving the heating efficiencyof the heating element, therefore improving the amount of aerosol andimproving efficiency.

The present disclosure further relates to an atomizer including theabove cartridge, as shown in FIG. 10 . The atomizer includes anatomizing sleeve, the atomizing sleeve includes an air flow path and areservoir. The cartridge 100 containing the heating element in FIG. 9 isassembled in the atomizing sleeve for liquid communicating the reservoirto realize conduction and atomization of liquid.

The atomizer in FIG. 10 is suitable for hollow cylindrical porouscartridges along an axial direction thereof. When the block-shapedcartridge in FIG. 9 is adopted, the inner structure of the atomizingsleeve is modified further to match, which is available from the priorart electronic cigarettes, then embedding the heating element in theaforementioned embodiments, finally adjusting the electrode connectionfor only making sure electricity conduction and heat generation.

The atomizer containing the above cartridge replies on the heatingelement embedded in the micro-porous body then bored with through holes,promoting mutual gathering of the aerosol from transversal andperpendicular directions. During atomization, the aerosol bubbles aregrowing bigger to improve the aerosol particles, with improving theheating efficiency of the heating element, therefore improving theamount of aerosol and efficiency.

The illustrated methods are exemplary only. Although the methods areillustrated as having a specific operation flow, two or more operationsmay be combined into a single operation, a single operation may beperformed in two or more separate operations, one or more of theillustrated operations may not be present in various implementations,and/or additional operations which are not illustrated may be part ofthe methods. In addition, the logic flows depicted in the accompanyingfigures and/or described herein do not necessarily require theparticular order shown, or sequential order, to achieve desirableresults. Other implementations may be within the scope of the followingclaims.

What is claimed is:
 1. A cartridge, comprising: a micro-porous body withan absorption surface and an atomization surface; a heating elementembedded in the micro-porous body; the heating element disposed betweenthe absorption surface and the atomization surface; wherein the heatingelement comprises a first surface and a second surface; the heatingelement is bored with multiple spaced through holes; the through holesare extending from the first surface to the second surface; wherein theheating element comprises a tube-shaped or a flake-shaped structure withan even thickness; and wherein an axial direction of the through holesis parallel with a direction of liquid conduction between the absorptionsurface and the atomization surface.
 2. The cartridge according to claim1, wherein diameters of the through-holes are in a range of 0.1˜0.5 mm.3. The cartridge according to claim 1, wherein a distance from theheating element to the atomization surface is in a range of 0.2˜2 mmalong a direction of the absorption surface towards the atomizationsurface.
 4. The cartridge according to claim 1, wherein the heatingelement comprises a strip-shaped structure to be wound as a spiral. 5.The cartridge according to claim 1, wherein the micro-porous bodycomprises a first micro-porous body and a second micro-porous body. 6.The cartridge according to claim 5, wherein the heating element isdisposed between the first micro-porous body and the second micro-porousbody.
 7. The cartridge according to claim 5, wherein the absorptionsurface is formed on the first micro-porous body and the atomizationsurface is formed on the second micro-porous body.
 8. The cartridgeaccording to claim 5, wherein a heat conductive rate of the firstmicro-porous body is higher than that of the second micro-porous body.9. The cartridge according to claim 5, wherein the first micro-porousbody comprises a first micro-porous material and the second micro-porousbody comprises a second micro-porous material; a heat conductive rate ofthe first micro-porous material is higher than that of the secondmicro-porous material.
 10. The cartridge according to claim 5, whereinthe first micro-porous body comprises a first porosity, the secondmicro-porous body comprises a second porosity; the first porosity isless than the second porosity.
 11. The cartridge according to claim 1,wherein a thickness of the heating element is in a range of 0.1 mm˜0.15mm.
 12. The cartridge according to claim 1, wherein along a radialdirection an outer surface of the microporous body is the absorptionsurface, and wherein an inner surface of the micro-porous body is theatomization surface.
 13. The cartridge according to claim 1, wherein theheating element and the micro-porous body has thermal contact forpreventing dry burn.
 14. The cartridge according to claim 1, wherein theheating element is embedded in the micro-porous body at a depth in arange of 0.2-2 mm.
 15. The cartridge according to claim 1, whereindistances between the heating element and the atomization surface are ina range of 0.2-2 mm.
 16. The cartridge according to claim 1, wherein anair flow path is formed inside the micro-porous body configured tooutput aerosol generated by the heating element.
 17. An atomizercomprising: an atomizing sleeve; the atomizing sleeve comprising areservoir formed therein; the atomizing sleeve comprising a cartridgetherein configured for atomizing the liquid; wherein the cartridgecomprises a micro-porous body with an absorption surface and anatomization surface; a heating element embedded in the micro-porousbody; the heating element disposed between the absorption surface andthe atomization surface; wherein the heating element comprises a firstsurface and a second surface; the heating element is bored with multiplespaced through holes; the through holes are extending from the firstsurface to the second surface; wherein the heating element comprises atube-shaped or a flake-shaped structure with an even thickness; andwherein an axial direction of the through holes is parallel with adirection of liquid conduction from the absorption surface to theatomization surface.
 18. The atomizer according to claim 17, wherein acontour of the micro-porous body is matched with a chamber of theatomizing sleeve.
 19. The atomizer according to claim 17, wherein aperiphery of the atomizing sleeve is bored with liquid conductive holesfor allowing liquid to flow into the atomizing sleeve.
 20. The atomizeraccording to claim 19, configured to allow the liquid that flows intothe atomizing sleeve to be absorbed by the absorption surface of themicro-porous body.